diff --git a/requirements.txt b/requirements.txt
index 0c147bdf6..6760be9b0 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -17,7 +17,7 @@ requests==2.32.3
 rst2pdf==0.102
 smartypants==2.0.1
 snowballstemmer==2.2.0
-Sphinx==7.4.7
+Sphinx==8.1.3
 sphinx-copybutton==0.5.2
 sphinx-rtd-theme==2.0.0
 sphinx-rtd-dark-mode==1.3.0